Repulsive and attractive timelike singularities in vacuum cosmologies

Details Repulsive and attractive timelike singularities in vacuum cosmologies Repulsive and attractive timelike singularities in vacuum cosmologies

Jul 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jmp....20.1356m&link_type=abstract

Journal of Mathematical Physics, Volume 20, Issue 7, pp. 1356-1361 (1979).

Mathematics

Mathematical Physics

Classical General Relativity

Scientific paper

Spherically symmetric cosmologies whose big bang is partially spacelike and partially timelike are constrained to occur only in the presence of certain types of matter, and in such cosmologies the timelike part of the big bang is a negative-mass singularity. In this paper examples are given of cylindrically symmetric cosmologies whose big bang is partially spacelike and partially timelike. These cosmologies are vacuum. In some of them, the timelike part of the big bang is clearly a (generalized) negative-mass singularity, while in others it is a (generalized) positive-mass singularity.

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